The porting document shows well why many PC ( AAA titles ) suck nowadays: because they are dumbed down to the restriction level of consoles. The result? Crappy games with crappy controls and that feel like a console game ported to a PC. They should have more said why NOT to do this than how to do it :D

I take it you don't know me. I do have played them and I do have play many other games which had (1) no console in mind or (2) cross-developed with a console in mind. Guess what the result is. Games from (1) are throughout better... for the computer player. Games from (2) all had the same problems which turned them into a nightmare for a PC gamer: bad UI, dumbed down controls ( often stripping IMPORTANT gameplay mechanics for the sake of consoles ) and often bad saving support.

What goes for Source ( stop call it orange, it's still the Source Engine with modifications after all ) it started out as a PC game and "then" ventured to consoles. This is why they have not yet met the same fate as all the other games from (2).